Is there a place to document this?
Example setting termination state:
on: ip link set dev can0 type can termination 120
off: ip link set dev can0 type can termination 0
Read the state:
ip -details link show can0
58: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
link/can promiscuity 0 minmtu 0 maxmtu 0
can state STOPPED restart-ms 0
gs_usb: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..1024 brp_inc 1
termination 120 [ 0, 120
clock 48000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535 gro_max_size 65536 parentbus usb parentdev 3-12.2:1.0
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-----Original Message-----
From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Sent: Sunday, September 18, 2022 5:18 PM
To: linux-can@xxxxxxxxxxxxxxx
Cc: Trevitz, Daniel <Daniel.Trevitz@xxxxxxxx>; Ryan Edwards <ryan.edwards@xxxxxxxxx>
Subject: [PATCH v2 0/3] can: gs_usb: cleanups and termination support
Hello,
this series first cleans up the driver a bit and then adds switchable termination support.
regards,
Marc
changes since v1 https://lore.kernel.org/all/20220918202348.675850-1-mkl@xxxxxxxxxxxxxx:
- add 1/3: "can: gs_usb: gs_make_candev(): convert from usb_control_msg() to usb_control_msg_recv()"
to make error handling easier
- add 2/3: "can: gs_usb: gs_make_candev(): clean up error handling"
which introduces a cleanup label
- move 1/3 to 3/3:
- fix gs_usb_get_termination(), set term value
- remove check of termination value from gs_usb_set_termination()
- check for initial termination in gs_make_candev()
